user_0={
    'username':'efermi',
    'first':'enrico',
    'last':'ferni',
}
for key,value in user_0.items():
    print(f"\nKey:{key}")
    print(f"Value:{value}")

favourite_languages={
    'jen':'python',
    'sarach':'c',
    'edward':'ruby',
    'phil':'python',
}
for name,language in favourite_languages.items():
    print(f"{name.title()}'s language is {language.title()}")